Go Player Ratings

JAAbout ratings

Cho Chien

Cho Chien (兆乾) has a rating of 1379, ranked 359 of 452 in professional play. Their highest rating so far is 1516 (April 10, 2007).

Cho Chien3 dan兆乾Nihon Ki-in Tokyo
Rating1379
Rank359
1-year change↑35
Peak rating1516
Last 1064-150
2026 record
4-10
Record since 1927
64-150
Win rate
.299

The rating is calculated from published game results. It does not include any adjustment for playing Black.

Professional ratingsFind a player

Rating history — professional

14 gamesHigh 1402Low 1329
42 gamesHigh 1402Low 1307
70 gamesHigh 1402Low 1260
213 gamesHigh 1516Low 1260

The “All” view starts at 2006; earlier years are used only to warm up the calculation and are not shown.

Rating history in the women's tournaments pool (for reference)

5 gamesHigh 1639Low 1602
34 gamesHigh 1669Low 1561
48 gamesHigh 1669Low 1518
139 gamesHigh 1669Low 1498

The “All” view starts at 2006; earlier years are used only to warm up the calculation and are not shown.

Ratings in other pools

Ratings for general play and for women's tournaments are calculated independently and do not affect each other.

  • Women's tournaments: 1617 (#31)

Recent games

Up to 20 games, newest first. “Change” is the rating movement.
DateOpponent and tournamentResultChange
August 27, 2026Jo BunenWomen's Kisei　Colors unknown↓8
July 27, 2026Bian WenkaiSGW Cup Chuyo Preliminary Round 1　Colors unknown↓8
June 22, 2026Hino ShotaHoninbo　Colors unknown↓10
May 25, 2026Kazama JunOza　Colors unknown↓4
May 18, 2026Matsumoto TakehisaHoninbo　Colors unknown↑30
May 11, 2026Morita MichihiroTengen　Colors unknown↓3
April 23, 2026Kono MitsukiJudan　Colors unknown↓4
April 2, 2026Kanda EiGosei　Colors unknown↓12
March 26, 2026Aoki KikuyoJudan　Colors unknown↑20
March 16, 2026Yashiro KumikoSenko Cup Women's Strongest Player Preliminary　as Black↓14
February 19, 2026Katsura AtsushiKisei First Tournament Preliminary Round 2　Colors unknown↓11
February 12, 2026Nakamura HidehitoJudan　Colors unknown↑22
February 2, 2026Kobayashi IzumiSenko Cup Women's Strongest Player Preliminary Semifinal　Colors unknown↑23
January 15, 2026Onishi RyuheiMeijin Preliminary B　as White±0
December 18, 2025Kanno MasashiMeijin　Colors unknown↑15
December 1, 2025Takeshita NanaSenko Cup Women's Strongest Player Preliminary Round 1　Colors unknown↑14
November 20, 2025Yamamoto MasatoMeijin　Colors unknown↑17
October 16, 2025Yanagihara SakiWomen's Honinbo Preliminary Round 1　Colors unknown↓11
September 22, 2025Mannami KanaSGW Cup Chuyo Preliminary Round 1　as Black↓14
September 1, 2025Moro ArisaWomen's Kisei　Colors unknown↓12

Head-to-head

Up to 10 opponents, most-played first. Records are from Cho Chien's point of view; jigo and no-result games are not counted as wins or losses. Only games from 1927 onward are included.
OpponentTotalAs BlackAs White
Kato Tomoko3-5.3750-10-1
Okuda Aya0-7.0000-10-1
Fujisawa Rina0-7.0000-10-1
Jo Bunen2-4.3331-10-0
Koyama Terumi2-4.3330-00-1
Kato Keiko1-5.1670-10-1
Shimosaka Miori4-2.6670-00-0
Shoji Kazuko5-01.0000-00-0
Suzuki Ayumi1-4.2000-10-2
Nakajima Mieko3-2.6000-00-0
Mukai Chiaki1-4.2000-01-0
Cho Kosumi4-1.8001-00-0

Record by year

Counted by calendar year, January to December (default wins and losses are included; jigo and no-result games are not). Only games from 1927 onward are counted, so these totals do not match the career records published by the two Ki-in.

YearRecordWin rate
20264-10.286
20258-15.348
202417-14.548
202315-12.556
20222-16.111
20217-16.304
202014-15.483
201912-14.462
201813-19.406
20178-19.296
20163-16.158
20157-7.500
20141-2.333
20132-5.286
20122-8.200
20114-10.286
20101-6.143
20096-4.600
20088-7.533
20072-2.500
Total64-150.299

Calculated from games played between 1927 and 2026 (as of September 17, 2026).